C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Speedometer gears

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Old Jul 28, 2017 | 06:43 PM
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Default Speedometer gears

1992 a4 corvette. Stock size tires.

so I changed my 2.59 Dana 36 to a 3.33 Dana 44 but will need to rebuild it. I'm going to go with 3.08 gears this time. I need to know what drive/driven gears to make the speedometer read correctly?

It has a electronic calibration unit from Dakota digital now but want to take it back off. Thanks.
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Old Jul 28, 2017 | 07:56 PM
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-Drive gear 8640517 / 17 tooth
-Driven gear 25513049 / 42 tooth
-VSS #10456092

Last edited by James93LT1; Jul 28, 2017 at 07:59 PM.
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Old Jul 29, 2017 | 08:53 AM
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OP - if you actually bought the VSS I mentioned several weeks ago use it + the 42 tooth gear and the original 17 tooth red drive gear for the 3.07.

I believe I have the 42 tooth gear.
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Old Jul 29, 2017 | 03:50 PM
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I sent the vss I got originally back. Since I couldn't get the correct driven gear. So it looks like I will need to order it again along with the green 42.

A local guy who works on differentials said he could rebuild the Dana 44 with 3.08 gears, installed for $1700. Does that sound fair? Also said it would make some noise. No guarantee it would be quite. Should I get someone else to do it?
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Old Jul 29, 2017 | 03:58 PM
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Originally Posted by Scooby92
I sent the vss I got originally back. Since I couldn't get the correct driven gear. So it looks like I will need to order it again along with the green 42.

A local guy who works on differentials said he could rebuild the Dana 44 with 3.08 gears, installed for $1700. Does that sound fair? Also said it would make some noise. No guarantee it would be quite. Should I get someone else to do it?
What was wrong with the 3.33?
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Old Jul 29, 2017 | 04:28 PM
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It is very loud. The guy who put it in for me said he checked it out and it was good. Of course that wasn't true cause I had the oil drained at another shop and it had water in it. So the guy lied to me. And cost me $.

So now I want it quiet and a rebuild is my only option it seems. The new gear oil didn't help quiet it down any.
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Old Aug 25, 2020 | 12:37 PM
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Do you have an extra 42 tooth (25513049) driven gear? I would be interested if so.
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